/**
 * Copyright 2009 OCLC Online Computer Library Center Licensed under the Apache
 * License, Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or
 * agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
class Person {
	// Attributes
	String name
	Date birthDate

	// Relationships
	Person hasMother
	Person hasFather

	static constraints = {
		name(blank: false)
		birthDate()
		hasMother(nullable: true)
		hasFather(nullable: true)
	}

	String toString() {
		"${name}"
	}
}
